The drawing indicates 0Cr18Ni9, while the material sheet specifies 304; I’m not sure if it will work (already recommended)
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I’m very confused about this issue; the drawing specifies 0Cr18Ni9, while the material sheet indicates 304. I’m not sure whether it will work Teachers with practical experience would be appreciated to offer some guidance. This post was last edited by SHISHOUHUA on 2008-7-11 19:10]
In the United States it is F304, in Japan it is SUS304; in China it corresponds to 0Cr18Ni9. But since pressure vessels require traceability, it’s better to issue a substitute document to avoid trouble for oneself. Generally, substitution is possible
China’s 0Cr18Ni9 is essentially equivalent to American 304. It can be used for general purposes where there are no requirements regarding corrosion resistance. However, in cases of high corrosion or exposure to acids and alkalis, 304 is a better choice.
Get a substitute form; don’t cause trouble for yourself – things are too uncertain right now.
There’s no problem with the material itself; it can be used normally. However, from a procedural standpoint, the project needs to be more rigorous; there should be official substitute forms, as this is in line with standard procedures and also ensures traceability.
00Cr19Ni10 is not strictly equivalent to 304L, 0Cr18Ni9 is not strictly equivalent to 304, 00Cr17Ni14Mo2 is not strictly equivalent to 316L, and 00Cr17Ni12Mo2 is not strictly equivalent to 316
It can be used, but procedures for substituting the required documents are needed
A material substitution form needs to be issued, and in such cases the design institute will agree to the substitution!
There’s no problem, but procedurally, a material substitution form still needs to be issued
A pending order must be issued; 304 can only be equivalent to 0Cr18Ni9!
00Cr17Ni12Mo2 and 316?? No, it should be 0Cr17Ni12Mo2 and 316
Procedurally speaking, just get a substitute form – don’t cause trouble for yourself
It can be said that the chemical composition of 304 is similar to and equivalent to that of 0Cr18Ni9 in China. However, 304 also has certain mechanical property requirements, which means that the standards for 304 are stricter than those for 0Cr18Ni9; 304 is the standard for rolled materials such as sheets in ASTM.
Looking at the information, the components differ slightly, but in reality their performance is basically the same; it’s just that they have different names in different countries, and this doesn’t matter in actual use
304 corresponds to 0Cr18Ni9 in China; use it directly
Do we need to redo the welding procedure qualification?
In general, it can be substituted, but not in cases where there are special requirements, such as corrosion resistance. It is recommended to follow the relevant procedures; if substitution is needed, there must be corresponding paperwork. Under no circumstances should substitution be carried out without permission, as that will only cause problems for you